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⭕Please Explain all three cases un details...thanQ 🙂
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Asked by jhajuhi19 | 13 Jun, 2020, 05:21: PM
answered-by-expert Expert Answer
Concept of moving conducting Rod in earths magnetic field
The basic concept that has been used here is if the conductor is moved in magnetic field an emf s induced
E m f equals B l v S i n theta W h e r e space theta space i s space t h e space a n g l e space b e t w e e n space t h e space d i r e c t i o n space o f space v e l o c i t y space a n d space m a g n e t i c space f i e l d. I n space c a s e space 1 space a s space t h e space c o n d u t o r space i s space p l a c e d space h o r i z o n t a l l y space a n d space m o v e s space i n space h o r i z o n t a l space p l a n e space i t space m a k e s space a n g l e space 90 to the power of 0 space w i t h space t h e space m a g n e t i c space f i e l d space a n d space h e n c e space e m f space i s space i n d u c e d space i n space b o t h space t h e space d i r e c t i o n space o f space i t s space m o v e m e n t. I n space c a s e space 2 space A s space t h e space c o n d u c t o r space h a s space b e e n space h o l d space v e r t i c a l l y space a n d space a n d space m o v e d space i n space W minus W space d i r e c t i o n space i t s space d i r e c t i o n space o f space m o t i o n space m a k e s space a n g l e space 90 to the power of 0 space w i t h space h o r i z o n t a l space e a r t h s space m a g n e t i c space f i e l d space w h i c h space i s space i n space S minus N space d i r e c t i o n space a n d space h e n c h e space e m f space i s space i n d u c e d w h e r e a s space w h e n space i t space i s space m o v e d space i n space N minus S thin space l i n e space t h e space d i r e c t i o n space o f space m o t i o n space o f space c o n d u c t o r space i s space p a r a l l e l space t o space t h e space d i r e c t i o n space o f space m a g n e t i c space f i e l d space l i n e s space a n d space h e n c e space i t space i s space m a k i n g space 0 to the power of 0 space w i t h space m a g n e t i c space f e l d space l i n e space t h e r e f o r e space E m f equals B l v S i n 0 to the power of 0 space c o m e s space o u t space t o space b e space z e r o I n space c a s e space 3 space T h e space c o n d u c t o r space i s space p l a c e d space h o r i x o n t a l l y space s o space w h e n space i t space i s space m o v e d space i n space E minus W space d i r e c t i o n space space i t space m a k e s space a n g l e space 90 to the power of 0 space w i t h space t h e space m a g n e t i c space f i e l d space a n d space h e n c e space e m f space i s space i n d u c e d space i n space b o t h space t h e space d i r e c t i o n space o f space i t s space m o v e m e n t space o n space t h e space o t h e r space h a n d space i f space i t space m o v e s space i n space N minus S space d i r e c t i o n space space i t space i s space m a k i n g space 0 to the power of 0 space w i t h space m a g n e t i c space f e l d space l i n e space t h e r e f o r e space E m f equals B l v S i n 0 to the power of 0 space c o m e s space o u t space t o space b e space z e r o spaceE m f equals B l v S i n theta W h e r e space theta space i s space t h e space a n g l e space b e t w e e n space t h e space d i r e c t i o n space o f space v e l o c i t y space a n d space m a g n e t i c space f i e l d. I n space c a s e space 1 space a s space t h e space c o n d u t o r space i s space p l a c e d space h o r i z o n t a l l y space a n d space m o v e s space i n space h o r i z o n t a l space p l a n e space i t space m a k e s space a n g l e space 90 to the power of 0 space w i t h space t h e space m a g n e t i c space f i e l d space a n d space h e n c e space e m f space i s space i n d u c e d space i n space b o t h space t h e space d i r e c t i o n space o f space i t s space m o v e m e n t. I n space c a s e space 2 space A s space t h e space c o n d u c t o r space h a s space b e e n space h o l d space v e r t i c a l l y space a n d space a n d space m o v e d space i n space W minus W space d i r e c t i o n space i t s space d i r e c t i o n space o f space m o t i o n space m a k e s space a n g l e space 90 to the power of 0 space w i t h space h o r i z o n t a l space e a r t h s space m a g n e t i c space f i e l d space w h i c h space i s space i n space S minus N space d i r e c t i o n space a n d space h e n c h e space e m f space i s space i n d u c e d w h e r e a s space w h e n space i t space i s space m o v e d space i n space N minus S thin space l i n e space t h e space d i r e c t i o n space o f space m o t i o n space o f space c o n d u c t o r space i s space p a r a l l e l space t o space t h e space d i r e c t i o n space o f space m a g n e t i c space f i e l d space l i n e s space a n d space h e n c e space i t space i s space m a k i n g space 0 to the power of 0 space w i t h space m a g n e t i c space f e l d space l i n e space t h e r e f o r e space E m f equals B l v S i n 0 to the power of 0 space c o m e s space o u t space t o space b e space z e r o I n space c a s e space 3 space T h e space c o n d u c t o r space i s space p l a c e d space h o r i x o n t a l l y space s o space w h e n space i t space i s space m o v e d space i n space E minus W space d i r e c t i o n space space i t space m a k e s space a n g l e space 90 to the power of 0 space w i t h space t h e space m a g n e t i c space f i e l d space a n d space h e n c e space e m f space i s space i n d u c e d space i n space b o t h space t h e space d i r e c t i o n space o f space i t s space m o v e m e n t space o n space t h e space o t h e r space h a n d space i f space i t space m o v e s space i n space N minus S space d i r e c t i o n space space i t space i s space m a k i n g space 0 to the power of 0 space w i t h space m a g n e t i c space f e l d space l i n e space t h e r e f o r e space E m f equals B l v S i n 0 to the power of 0 space c o m e s space o u t space t o space b e space z e r o space Answered by Utkarsh Lokhande | 14 Jun, 2020, 06:13: AM

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NEET neet - Physics
EmI lesson
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solution
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Please clarify the illustration is right or wrong , in diagram they given induced current in clockwise only, or also area vector S in same direction in both , please tell the illustration is wrong or rule they given is wrong
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Asked by bharathrocky0017 | 12 Mar, 2024, 09:17: PM
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in a series LCR circuit the inductance l is 10mH capacitance is 1micro F and resistance is 100ohm the frequency at which resonance occurs is
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in an L- C -R circuit having l=8h, c=0.5 r=100 in series the resonance frequency in rads is
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Why I avg. (Current average) multiplied by Vavg (voltage average) and Time period does not give me heat loss in full cycle ? As I know I avg gives me dc component for ac ,I can take + I avg & -I avg for for +half cycle and -half cycle respectively,then net current will be zero in full cycle but both the current are responsible for heat production in ac so why can'take and do  I avg ×v avg×T= Heat produced in ac current . (I know that vrms ×Irms×T will give me heat loss ) But my quetion it is why it is wrong which I had first . thank you
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NEET neet - Physics
An electric bulb rated 100W 40 V has to be operated at 50V 50Hz AC supply. What is the value of inductance of inductor in the bulb?
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Asked by joshimohit1050 | 22 Jul, 2021, 07:12: PM
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NEET neet - Physics
⭕ Help me in this, thanks..!  Answer given is 45°
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Asked by jhajuhi19 | 18 May, 2021, 08:55: AM
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